Compare Connections  1mm Thick Battens on 3mt bays
Bolted Apex
Bolted Commercial Frames 
Bolted Knee Plates Stiffened with Knee Plate Stiffener on Top. 
Brackets Cast 300mm into Concrete
Cast in Bracket's 200mm out of slab and fully bolted
Fully Wrap Around Apex  Fully Wrap Around Knee Plates
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